Solved

Vanishing PHP variables

Posted on 2007-03-28
8
248 Views
Last Modified: 2011-10-03
Here's a pretty simple problem:

I am writing a registration page in PHP and I can't seem to figure out why my database doesn't record the IP address of the registered user and the timestamp indicating when they registered.  

I declare the variables at the top of the PHP page:

$time = time();
$time+=(3*60*60);
$IPaddress = $_SERVER['REMOTE_ADDR'];

// some more code

.. and then, down the page, I refer to the variables in the function register() that writes the information to the database:

function register() {
$create = "INSERT into registration (identifier,ip,timestamp,first,last,email,stat,region,phone,job,password,advisory,popup,sound) values ('$identifier','$IPaddress','$time','$_POST[first]','$_POST[last]','$_POST[email]', '$_POST[station]','$region','$_POST[phone]','$_POST[job]','$_POST[password1]','1010101010','ON','OFF')";
mysql_query($create);
mysql_close();
}

All of my other variables get recorded to the database correctly -- but for some reason the $IPaddress and $time variables don't.  Any reason why?
0
Comment
Question by:marcparillo
  • 5
  • 3
8 Comments
 
LVL 27

Expert Comment

by:yodercm
ID: 18812448
Either pass the variables to the function as parameters, or declare them as global in the function.  Right now, the function code can't see them.
0
 
LVL 3

Author Comment

by:marcparillo
ID: 18812482
Thanks, I knew it was something simple like that.  

If I don't want to pass variables like this:

function register($time,$IPaddress) {
//code
}

.. how do I declare them as global? like this?

global $time, $IPaddress;

Thanks
0
 
LVL 27

Expert Comment

by:yodercm
ID: 18812511
exactly :)
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 27

Expert Comment

by:yodercm
ID: 18812516
function register() {
  global $time, $IPaddress;
  $create = "INSERT into registration  (identifier,ip,timestamp,first,last,email,stat,region,phone,job,password,advisory,popup,sound) values ('$identifier','$IPaddress','$time','$_POST[first]','$_POST[last]','$_POST[email]', '$_POST[station]','$region','$_POST[phone]','$_POST[job]','$_POST[password1]','1010101010','ON','OFF')";
mysql_query($create);
mysql_close();
}
0
 
LVL 3

Author Comment

by:marcparillo
ID: 18812702
Don't I have to declare the global variables where they're created ... at the top of the page?  In your example above, you're creating the global variables inside the function.
0
 
LVL 27

Accepted Solution

by:
yodercm earned 125 total points
ID: 18812718
Nope, declare them global IN the function.
0
 
LVL 3

Author Comment

by:marcparillo
ID: 18812738
Thanks vodercm --

My background is in Perl, so declaring variables as "global" inside functions in PHP is backward from what I learned in Perl, where "global" variables are declared with the "my" reference anywhere outside of functions.
0
 
LVL 27

Expert Comment

by:yodercm
ID: 18847172
You're welcome, good luck :)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction HTML checkboxes provide the perfect way for a web developer to receive client input when the client's options might be none, one or many.  But the PHP code for processing the checkboxes can be confusing at first.  What if a checkbox is…
Foreword (July, 2015) Since I first wrote this article, years ago, a great many more people have begun using the internet.  They are coming online from every part of the globe, learning, reading, shopping and spending money at an ever-increasing ra…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to count occurrences of each item in an array.

680 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question